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WDA Motion Alignment Sensor

Belt or Chain Alignment and Motion Monitor

WDA3V34CAI, HTAS1V34

Non-contacting extended range magnetic proximity sensor, not affected by dust or material build up, used to detect moving ferrous material up to 100mm away from the sensor. The WDA sensor can be used on bucket elevators to measure speed and alignment by sensing either the metal elevator buckets, or the ferrous bolts attached to plastic buckets. A more specialized use for the WDA switch is as a broken/slack chain detector on drag chain conveyors, or as a non-contact speed switch for screw conveyors. The sensor is used in conjunction with a PLC or with 4B's Watchdog™ Elite or A400 Elite control units. Two output signals are provided: one signal is a pulse output, representing each bucket detected: the second signal is a continuous output when moving buckets are detected.

WDA Sensor Mount

WDA Sensor Mount

The WDAMB sensor mount (included with sensor) attaches to the WDA sensor and the housing of the machine. A bolt within the mount allows the sensor to be easily loosened and adjusted to the best sensing depth for the application.

Speed Relay

The Speed Relay is used to monitor the speed of a rotating shaft and detect if it rises or falls below a preset safety level.

The DIN rail mounted speed relay can be used with any Rotech encoder, and with 4B’s WDA or P800 proximity sensors. A user adjustable underspeed relay contact output can sound an alarm or shutdown machinery when the shaft speed falls below the preset level.

The A400 Elite Trackswitch belt misalignment monitor uses 4B WDA or BAP magnetic proximity sensors to monitor the alignment of the belt in bucket elevators. Each control unit incorporates two independent monitoring circuits for early detection of belt misalignment on one or two bucket elevators. The 4B magnetic reluctance sensors operate in pairs to detect the position of steel bolt heads or steel buckets as they pass through the sensor's adjustable magnetic field. Nuisance / false alarms are tuned out by setting a tolerance window on each sensor which allows for normal belt travel.

The WDA sensor will not calibrate, what is the issue? Make sure that the orange wire is connected correctly, this powers the potentiometer (calibration screw).

Why will the LED on the back of the sensor not turn on?
Check to see that there are no objects stuck to the face of the sensor (washer, bolts, etc.). Due to the magnetic pull on the face of the sensor, objects can stick and interfere with the sensor.

What if the best sensing depth of the WDA sensor?
The WDA sensor can detect ferrous targets from 1 to 3 inches away. Keep in mind the distance of other objects within the sensing area. For example, a belt splice on a bucket elevator may be longer than the intended target and can interfere or hit the WDA sensor.

Preventative maintenance can help reduce the risk of equipment failure and consequent downtimes. When it comes to monitoring your bucket elevators and belt conveyors, 4B can recommend you the ideal combination of sensors and monitoring systems to suit your requirements and budget.

4B provides an extensive range of their own ATEX / IECEx / CSA /GOST- R approved hazard monitoring systems, misalignment switches and bearing temperature monitors and level controls. We can offer you anything from a replacement sensor to a fully integrated hazard monitoring system which can be operated either as a stand-alone system or connected to your PLC.And if you do not want to install hazard monitoring sensors on every piece of equipment in your plant straightaway, we can offer you a scalable solution starting with carefully chosen equipment and systems that can be expanded at a later date to encompass other machines in the plant.We can also offer you an installation service, and we do provide a competent after-sales technical service to help you overcome any technical problems with your monitoring equipment.

To get a recommendation from our engineers, please fill in the electronics questionnaire below. Please fill this form in as accurately as possible to allow us to deal with your enquiry more effectively.

Contact Details

Company *

Address

Postcode

Country

Name *

Email *

Phone No

Fax No

Elevator Information

Elevator Type

Bucket Type

Number of Elevators

Product / Material Being Elevated

Monitoring Requirements (Check All that Apply):

Bearing Temperature - Head

Bearing Temperature - Boot

Bearing Temperature - Other

Belt Misalignment - Head

Belt Misalignment - Boot

Belt Misalignment - Other

Pulley Misalignment - Head

Pulley Misalignment - Boot

Plug Condition - Discharge

Plug Condition - Intake

Speed

Other Monitoring Requirement

Other Information:

Conveyor Information

Conveyor Type:

Conveyor Design:

Number of Conveyors:

Product / Material Being Conveyed:

Monitoring Requirements (Check all that Apply):

Bearing Temperature - Drive

Bearing Temperature - Tail

Bearing Temperature - Other

Belt Misalignment - Drive

Belt Misalignment - Tail

Belt Misalignment - Other

Speed

Plug Condition

Other Monitoring Requirement

Other Information:

Silo/ Bin Information

Silo Type:

Number of Silos / Bins

Product / Material Being Moved:

Monitoring Requirements (Check all that Apply):

Level Indication - High

Level Indication - Low

Level Indication - Intermediate

Level Indication - Continuous

Gate Position

Other Information:

If you would like to send us a technical drawing or document with your enquiry, please send to 4b-uk@go4b.com.

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